// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

library subtype_test;

import 'type_test_helper.dart';
import '../../../sdk/lib/_internal/compiler/implementation/dart_types.dart';
import "../../../sdk/lib/_internal/compiler/implementation/elements/elements.dart"
       show Element, ClassElement;

void main() {
  testTypeVariableOccurrence();
}

testTypeVariableOccurrence() {
  var env = new TypeEnvironment(r"""
      typedef S Typedef1<S>();
      typedef void Typedef2<S>(S s);
      typedef void Typedef3<S>(A<S> a);

      class A<T> {
        int field1;
        T field2;
        A<int> field3;
        A<T> field4;
        A<A<int>> field5;
        A<A<T>> field6;
    
        Typedef1 field7;
        Typedef1<int> field8;
        Typedef1<T> field9;
        Typedef1<Typedef1<T>> field10;

        Typedef2 field11;
        Typedef2<int> field12;
        Typedef2<T> field13;
        Typedef2<Typedef1<T>> field14;

        Typedef3 field15;
        Typedef3<int> field16;
        Typedef3<T> field17;
        Typedef3<Typedef1<T>> field18;

        void method1() {}
        T method2() => null;
        A<T> method3() => null;
        void method4(T t) {}
        void method5(A<T> t) {}
        void method6(void foo(T t)) {}
        void method7([T t]) {}
        void method8({T t}) {}
      }
      """);

  ClassElement A = env.getElement('A');

  expect(bool expect, String memberName) {
    DartType memberType = env.getMemberType(A, memberName);
    TypeVariableType typeVariable = memberType.typeVariableOccurrence;
    if (expect) {
      Expect.isNotNull(typeVariable);
      Expect.equals(A, Types.getClassContext(memberType));
    } else {
      Expect.isNull(typeVariable);
      Expect.isNull(Types.getClassContext(memberType));
    }
  }

  // int field1;
  expect(false, 'field1');
  // T field2;
  expect(true, 'field2');
  // A<int> field3;
  expect(false, 'field3');
  // A<T> field4;
  expect(true, 'field4');
  // A<A<int>> field5;
  expect(false, 'field5');
  // A<A<T>> field6;
  expect(true, 'field6');

  // Typedef1 field7;
  expect(false, 'field7');
  // Typedef1<int> field8;
  expect(false, 'field8');
  // Typedef1<T> field9;
  expect(true, 'field9');
  // Typedef1<Typedef1<T>> field10;
  expect(true, 'field10');

  // Typedef2 field11;
  expect(false, 'field11');
  // Typedef2<int> field12;
  expect(false, 'field12');
  // Typedef2<T> field13;
  expect(true, 'field13');
  // Typedef2<Typedef1<T>> field14;
  expect(true, 'field14');

  // Typedef3 field15;
  expect(false, 'field15');
  // Typedef3<int> field16;
  expect(false, 'field16');
  // Typedef3<T> field17;
  expect(true, 'field17');
  // Typedef3<Typedef1<T>> field18;
  expect(true, 'field18');

  // void method1() {}
  expect(false, 'method1');
  // T method2() => null;
  expect(true, 'method2');
  // A<T> method3() => null;
  expect(true, 'method3');
  // void method4(T t) {}
  expect(true, 'method4');
  // void method5(A<T> t) {}
  expect(true, 'method5');
  // void method6(void foo(T t)) {}
  expect(true, 'method6');
  // void method7([T t]);
  expect(true, 'method7');
  // void method8({T t});
  expect(true, 'method8');

}